tests/lib/libc/net/h_servent.c

   1 /* $NetBSD: h_servent.c,v 1.2 2011/04/07 18:14:09 jruoho Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <netdb.h>
  30 #include <stdint.h>
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <netinet/in.h>
  34 #include <sys/types.h>
  35 #include <stdio.h>
  36
  37 static void
  38 pserv(const struct servent *svp)
  39 {
  40         char **pp;
  41
  42         printf("name=%s, port=%d, proto=%s, aliases=",
  43             svp->s_name, ntohs((uint16_t)svp->s_port), svp->s_proto);
  44         for (pp = svp->s_aliases; *pp; pp++)
  45                 printf("%s ", *pp);
  46         printf("\n");
  47 }
  48
  49 static void
  50 usage(void)
  51 {
  52         (void)fprintf(stderr, "Usage: %s\n"
  53             "\t%s -p <port> [-P <proto>]\n"
  54             "\t%s -n <name> [-P <proto>]\n", getprogname(), getprogname(),
  55             getprogname());
  56         exit(1);
  57 }
  58
  59 int
  60 main(int argc, char *argv[])
  61 {
  62         struct servent *svp;
  63         const char *port = NULL, *proto = NULL, *name = NULL;
  64         int c;
  65
  66         while ((c = getopt(argc, argv, "p:n:P:")) != -1) {
  67                 switch (c) {
  68                 case 'n':
  69                         name = optarg;
  70                         break;
  71                 case 'p':
  72                         port = optarg;
  73                         break;
  74                 case 'P':
  75                         proto = optarg;
  76                         break;
  77                 default:
  78                         usage();
  79                 }
  80         }
  81
  82         if (port && name)
  83                 usage();
  84         if (port) {
  85                 if ((svp = getservbyport(htons(atoi(port)), proto)) != NULL)
  86                         pserv(svp);
  87                 return 0;
  88         }
  89         if (name) {
  90                 if ((svp = getservbyname(name, proto)) != NULL)
  91                         pserv(svp);
  92                 return 0;
  93         }
  94
  95         setservent(0);
  96         while ((svp = getservent()) != NULL)
  97                 pserv(svp);
  98         endservent();
  99         return 0;
 100 }